CSB MSV-400 2V 400Ah VRLA-AGM Telecom Backup Battery

Product Features

Utilizes valve-regulated lead-acid (VRLA) technology
AGM (absorbent glass mat) design, maintenance-free, with gas recombination efficiency up to 99%
Features pure lead construction and proprietary element formulation
Engineered for high-capacity float standby power applications
Manufactured in accordance with IEC 60896-21/22:2004 and certified to UL1989 (MH14533)

Application Scenarios

Telecom room 48V DC system backup
Optical fiber access network central office standby power
Broadband access equipment backup power
Mobile communication core network backup
Microwave relay station DC power supply
Communication base station DC power backup

Product parameters

Model：MSV-400
Voltage：2 Vdc
Nominal Capacity：400 Ah @10hr-rate
Ah Capacity：408.00 (8-Hr 1.75 VPC @ 25°C)
Ah Capacity：424.00 (20-Hr 1.75 VPC @ 25°C)
Ah Capacity：400.00 (8-Hr 1.80 VPC @ 25°C)
Max. Charge Current：120.00 A
Max. Discharge Current：2400 A
Internal Resistance：0.43 mΩ
Terminal Type：I4 thread copper alloy terminal to accept M8 bolt
Terminal Torque：126±25 Kgf·cm / 109±22 Lbf·in / 12.3±2.5 N·m
Container Material：Flame-retardant ABS (UL 94-V0)
Weight：24.90 / 54.88 kg / lb.
Length (L)：197.0±2.0 / 7.76±0.08 mm / in
Width (W)：170.0±2.0 / 6.69±0.08 mm / in
Height (H)：339.0±2.5 / 13.15±0.10 mm / in
Design Life：Up to 15 years in standby service at 25°C; Eurobat (20°C): >12 years, Very Long Life
Float Charging Voltage：2.21 ~ 2.25 Vdc/battery
Equalizing Charging Voltage：2.35 Vdc/battery
Operating Temperature：discharge -15°C to 50°C; charge/storage -15°C to 40°C

Product details

The CSB MSV-400 belongs to the MSV series and is a 2V valve-regulated sealed lead-acid battery utilizing Absorbent Glass Mat (AGM) technology, achieving a gas recombination efficiency of up to 99% with a maintenance-free design. Telecommunications and similar applications require high-capacity backup power. This battery has a nominal capacity of 400Ah (at 25°C, 1.80VPC, 10-hour rate). Additionally, the 8-hour rate (1.75VPC) capacity is 408Ah, the 20-hour rate (1.75VPC) capacity is 424Ah, and the 8-hour rate (1.80VPC) capacity is 400Ah, meeting these requirements. In terms of design, the battery uses a pure lead construction with proprietary elements. At 25°C, the float life can reach 15 years, meeting the Eurobat long-life standard (over 12 years at 20°C). Its casing is made of flame-retardant ABS material (UL 94-V0) and is equipped with I4 threaded copper alloy terminals that accept M8 bolts, with a terminal torque of 126±25 Kgf·cm (12.3±2.5 N·m). It weighs approximately 24.90 kg, with dimensions of 197.0mm in length, 170.0mm in width, and 339.0mm in height, and an internal resistance of 0.43 mΩ. Charging parameters are as follows: at 25°C, the float voltage is 2.21~2.25 Vdc/cell, the equalization voltage is 2.35 Vdc/cell, the maximum charging current is 120.00A, and the maximum discharge current is 2400A. Operating temperature range: nominal 25°C, discharge allowed from -15°C to 50°C, charging and storage allowed from -15°C to 40°C. The self-discharge rate is low, less than 10% after 90 days of storage at 25°C, and it can be stored for up to 6 months. However, it must be fully charged before use. If the storage temperature exceeds 25°C, a recharge is required in advance. The MSV-400 is specifically designed for high-capacity float-charge backup power applications and is suitable for the telecommunications field. Its manufacturing complies with IEC 60896-21/22:2004 and UL1989 (MH14533) certifications. The combination of long life, high capacity, and maintenance-free features enables this battery to provide reliable support for critical backup power systems.